Seagate IronWolf Pro, 4 TB, Enterprise NAS Internal HDD –CMR 3.5 Inch, SATA 6 Gb/s, 7,200 RPM, 256 MB Cache for RAID Network Attached Storage (ST4000NT001)

The Seagate IronWolf Pro 4TB Internal Hard Drive (ST4000NT001) is a high-performance enterprise NAS HDD designed for 24/7 multi-user environments. Featuring CMR technology, a SATA 6Gb/s interface, and a 7200 RPM rotational speed, this 3.5-inch drive delivers exceptional reliability, fast data access, and superior RAID performance. With a 256MB cache, it is optimized for NAS systems, servers, and high-demand workloads, offering a 550TB/year workload rating and 2.5M hours MTBF for long-term durability. The IronWolf Health Management system and a 3-year Rescue Data Recovery Service provide enhanced data protection and peace of mind, making this HDD an ideal choice for business-critical storage and multi-bay NAS setups.